2015 Mercedes-Benz C-Class Visibility & Wipers Problems

Failed component: Front Sunroof Clip What component or system failed or malfunctioned, and is it available for inspection upon request? Sunroof clip, yes. How was your safety or the safety of others put at risk? The glass pane lifted while the car was in motion and had to be held down to secure it until the car stopped. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No While merging to enter the freeway at approx 45-50 mph I opened my sunroof. At about halfway back the glass began to lift up off the track/railing as if it was going to fly off the track. Had I not been holding the button to open the sunroof I would not have noticed and the entire glass pane would have blown off, possibly damaging the car or worse flying off and hit another car. I had to hold the glass in place to keep it from flying off until I was able to exit the freeway. Once I stopped the car to inspect the sun roof I noticed the clip that secures the glass to the track was broken (crumbled) in the sunroof track. I removed the pieces of broken plastic from the track and was then able to close the sunroof. I am now unable to safely open my sunroof while the vehicle is in motion.

On May 27th, 2025, during highway driving suddenly the sunroof got open by itself for like 3 inches upwards from the front and after exiting the highway i stopped and push the sunroof downwards by applying the force and apply duct tape all around the sunroof to keep it protect from sun and rain so i am not driving anymore before getting it resolved.

Known issue with panoramic sunroof on 2015 Mercedes C300 sunroof. Having to be replaced on “many” vehicles costing over $2500.00 for repair. Sunroof gets stuck and will not close.

During a drive, I had the sunroof opened and then it suddenly started raining. When I tried to close the sunroof using the button, it wouldn't budge. I had to continue driving on the highway with rain pouring inside the vehicle. When I finally found a place to stop and check the sunroof, I saw that the roof on one side was popped off. After a few minutes of trying to close it, it finally popped back into place on its own. However, now there is a rattling sound coming from the sunroof when driving, and the car is no longer quiet. I can hear outside noise as if a window is cracked opened. Every time the sunroof opens and close there’s a slight popping sound on that side and looks like it is still out of place.

The contact owns a 2015 Mercedes-Benz C300. The contact stated that when she opened the panoramic roof, she heard a grinding noise and sunroof failed to close as designed. The contact then stated that the panoramic roof failed to open and close as needed. The vehicle was taken to the dealer where it was diagnosed that the panoramic roof guide rail had fractured and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and the contact was provided a case number. The failure mileage was approximately 48,000. The VIN was unavailable.

The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 55 MPH, an abnormal wind sound was coming from the sunroof. The contact then heard a loud banging sound and saw the dethatched sunroof panel in the rear-view mirror. The contact pulled over to assess the damage and then drove the vehicle home. The contact initially called the dealer where he purchased the vehicle and was referred to the local dealer authorized dealer for assistance. The contact was initially given an appointment that exceeded a reasonable amount of time for the repair. Upon investigation, the contact discovered NHTSA Campaign Number: 21V197000 (Structure) which he linked to the failure. The manufacturer was notified about recall and stated that they were unaware of that recall. The vehicle was not repaired. The failure mileage was approximately 96,000.

While driving on the highway, I heard a noise.  While still driving , I quickly looked around which included looking in my rear view mirror.  I saw something in the air and saw it hit the road.  It didn't occur to me that what I saw flying was from my car.  I thought the noise was from some part of the object (maybe a screw) hitting my car.// When I got to where I was going, I walked from my driver's side around the back of the car looking to see if there were any noticeable issues.  When I didn't see any issues, I decided to walk to the front of the car where I noticed the panel missing between the top of the front windshield and the sunroof. // I found the following article: https://www.carcomplaints.com/news/2021/mercedes-benz-sunroof-problems-cause-recall.shtml The scenario described in the article happened to me on Saturday 27Aug2022: "And a 2015 Mercedes C300 driver heard loud wind noise coming from the top of the vehicle near the windshield while driving above 40 mph. ... while driving on the freeway the driver heard a loud ripping noise and realized the panel was missing. The sunroof panel that flew away wasn't found."

The contact owns a 2015 Mercedes-Benz C300. The contact stated while driving 35 MPH, the panoramic sunroof detached from the vehicle without warning. The vehicle was driven to the dealer, and she was informed that the vehicle was not under warranty or recall. The contact was provided an estimate for the repair. The manufacturer was notified of the failure and was provided the same information as the dealer. The vehicle was repaired. The failure mileage was 24,000.

Panoramic glass sliding plastic brackets broke off while driving at 25-35 mph Lifting up the glass off the vehicle. Quick reaction saved the large detached glass from flying off into the roadway injuring or killing someone. Vehicle was 5 years old and out of warranty. Dealer estimated repair cost at $2500

TL* THE CONTACT OWNS A 2015 MERCEDES-BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT AN UNKNOWN SPEED, THE GLASS PANEL DETACHED FROM THE VEHICLE. THE CONTACT VEERED TO THE SHOULDER OF THE ROADWAY AND INSPECTED THE VEHICLE AND CONFIRMED THAT THE GLASS PANEL HAD DETACHED FROM THE VEHICLE. THE GLASS PANEL WAS NOT RETRIEVED. ADDITIONALLY, THE CONTACT STATED THAT WHEN IT RAINED, WATER WOULD ENTER THE CABIN OF THE VEHICLE. MERCEDES-BENZ OF CUTLER BAY (10701 SW 211 ST, CUTLER BAY, FL 33189, (305) 251-0345) WAS CONTACTED AND INFORMED OF THE FAILURES. THE CONTACT WAS INFORMED THAT THE VEHICLE WAS NOT SUBJECTED TO A RECALL. THE VEHICLE WAS REPAIRED. THE CONTACT REFERENCED NHTSA CAMPAIGN NUMBER: 19V918000 (VISIBILITY) AS A POSSIBLE SOLUTION FOR THE FAILURE HOWEVER, THE VIN WAS NOT INCLUDED. THE FAILURE MILEAGE WAS APPROXIMATELY 59,900.*DT*JB

SUN ROOF FIX GLASS FLEW OFF OF VEHICLES IN TRAFFIC WHILE I WAS DRIVING ON A BUSY HIGHWAY. ADHESIVE GLUE FAILED TO KEEP THE PART ATTACHED.

TL* THE CONTACT OWNS A 2015 MERCEDES BENZ C300. THE CONTACT STATED THAT WHILE DRIVING AT 55 MPH, THE GLASS IN THE SUNROOF COLLAPSED WITHOUT IMPACT. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE SUNROOF WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 21,000.

THE PANORAMIC SUNROOF IN MY CAR EXPLODED AT APPROXIMATELY 6.45AM ON MONDAY, JUNE 29TH 2015. THE CAR WAS PURCHASED NEW FROM MERCEDES BENZ IN PARAMUS ON SATURDAY, JUNE 27TH, 2015. THE CAR HAD 146 MILES ON THE ODOMETER. I WAS IN NJ AND I WAS TRAVELING WEST ON I-78 (EXPRESS LANES) AT APPROXIMATELY 65MPH. THERE WERE NO OTHER VEHICLES IN CLOSE PROXIMITY, THERE WAS A VEHICLE TRAILING A FEW CAR LENGTHS BEHIND ME. THE ROAD WAS RELATIVELY SMOOTH AND THE WEATHER WAS DRY. NO PROJECTILE HIT THE GLASS PRIOR TO IT EXPLODING. WHEN THE SUNROOF EXPLODED, ALL I HEARD WAS A LARGE BANG AND THEN GLASS FALLING INTO THE CAR AND ALSO 'EXITING' THE CAR. THE GLASS DEBRIS LEFT SIGNIFICANT PITTING ON THE TRUNK OF THE CAR. I ESTIMATE 25% OF THE GLASS CAME INTO THE CAR. I SWERVED INTO TO THE EMERGENCY LANE AND STOPPED IN THE EMERGENCY LANE.